Unformatted text preview: Sampling Rule for Treating Dependent Events as Independent Population (Size N ) ( N ≥ 1000 , say) ↓ (even if we draw without replacement) Sample (Size n ) ( n ≤ 0.05 N ) If we are drawing a sample of size n from a population of size N without replacement, then, even though the selections are dependent, we can practically treat them as independent if: • The sample size is no more than 5% of the population size: n ≤ 5% of N ( ) , or n ≤ 0.05 N , and • The population size, N , is large: say, for our class , N ≥ 1000 ....
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 Fall '09
 KIM
 Multiplication, Population Ecology, dependent events

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